高层建筑损伤识别中的补偿算法
|
摘要
本文在已有研究工作的基础上 ,提出了处理激励测量信息不完备情况下的补偿算法。此方法主要针对高层建筑动力检测中强迫激励的情况 ,是一种基于时域的识别方法。该方法实际上是利用客观工程实际中结构系统激励所具有的物理特征作为识别计算的辅助条件 ,来解决测量信息的不完备性问题。算例分析表明了该方法的可行性
A new time domain identification method named as Compensation Method is proposed in the paper on the base of some primary research work.The new method aims to solve the structural parameter identification problem when the input information is incomplete,which is a commonly encountered problem in the damage detection of tall buildings.The innovative idea of the new method is that it takes the physical or mechanical information of the exicitation to the system as an additive condition in the parameter identification process.The proposed method has been evaluated and validated through two numerical examples,i.e.a simple dynamic system and a 20_story tall building.Noise_free measurements as well as noise_included measurements are considered in the numerical examples to verify the robustness of the proposed algorithm.Numerical studies show that the proposed method has several favorable performances such as high accuracy,adaptability and insensitivity to initial parameters estimation.
A new time domain identification method named as Compensation Method is proposed in the paper on the base of some primary research work.The new method aims to solve the structural parameter identification problem when the input information is incomplete,which is a commonly encountered problem in the damage detection of tall buildings.The innovative idea of the new method is that it takes the physical or mechanical information of the exicitation to the system as an additive condition in the parameter identification process.The proposed method has been evaluated and validated through two numerical examples,i.e.a simple dynamic system and a 20_story tall building.Noise_free measurements as well as noise_included measurements are considered in the numerical examples to verify the robustness of the proposed algorithm.Numerical studies show that the proposed method has several favorable performances such as high accuracy,adaptability and insensitivity to initial parameters estimation.
引文
1 ChangFK .StructuralHealthMonitoring:ASummaryReportontheFirstInternationalWorkshoponStructuralHealthMonitoring.Proc.
2 ndInt.WorkshoponStruct.HealthMonitoring,StandfordUniv.,Standford,Calif.19992 DoeblingSW ,FarrarCR ,PrimeMB ,ShevitzDW .DamageIden tificationandHealthMonitoringofStructuralandMechanicalSys temfromChangesinTheirVibrationCharacteristics:ALiteratureReview,Rep.La-13070-MS ,LosAlamosNationalLaboratory,LosAlamos,N .M .1996
3 陈 隽,李 杰.部分输入未知条件下的结构系统识别研究.地震工程与工程振动,1998,18(4):44-47
4 李 杰,陈 隽.输入未知条件下结构物理参数识别方法研究.计算力学学报,1999,16(1):32-40
5 李 杰,陈 隽.子结构物理参数识别与输入地震动的复合反演研究.振动与冲击,1998,17(1):58-62
6 ChenJ ,LiJ .(1999),Timedomainmethodforstructuralparame tersidentificationwithunknowninput,InCD_ROMof12WCEE ,No.923
7 罗华耿等.相位修正技术及其在大型结构现场动力测试中的应用.应用力学学报,1992,9(3):103-108
8 顾家扬,宗美珍.地面环境随机激励下大型建筑物系统识别和参数识别.振动与冲击,1989,18(2):19-27
9 李 杰.随机结构系统———分析与建模,北京:科学出版社,1996
10 张 方,朱德懋.基于广义正交域的一种动荷载识别方法研究.南京航空航天大学学报,1996,28(6):755-760
2 ndInt.WorkshoponStruct.HealthMonitoring,StandfordUniv.,Standford,Calif.19992 DoeblingSW ,FarrarCR ,PrimeMB ,ShevitzDW .DamageIden tificationandHealthMonitoringofStructuralandMechanicalSys temfromChangesinTheirVibrationCharacteristics:ALiteratureReview,Rep.La-13070-MS ,LosAlamosNationalLaboratory,LosAlamos,N .M .1996
3 陈 隽,李 杰.部分输入未知条件下的结构系统识别研究.地震工程与工程振动,1998,18(4):44-47
4 李 杰,陈 隽.输入未知条件下结构物理参数识别方法研究.计算力学学报,1999,16(1):32-40
5 李 杰,陈 隽.子结构物理参数识别与输入地震动的复合反演研究.振动与冲击,1998,17(1):58-62
6 ChenJ ,LiJ .(1999),Timedomainmethodforstructuralparame tersidentificationwithunknowninput,InCD_ROMof12WCEE ,No.923
7 罗华耿等.相位修正技术及其在大型结构现场动力测试中的应用.应用力学学报,1992,9(3):103-108
8 顾家扬,宗美珍.地面环境随机激励下大型建筑物系统识别和参数识别.振动与冲击,1989,18(2):19-27
9 李 杰.随机结构系统———分析与建模,北京:科学出版社,1996
10 张 方,朱德懋.基于广义正交域的一种动荷载识别方法研究.南京航空航天大学学报,1996,28(6):755-760
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心